MESON Chess Problem Database

Problem Display
PID: 218755 (4R3/7n/pK6/P2k4/4N3/8/2b3PB/1n3Q2 w - - 0 1)

Rosenberg, J

Deutsche Schachzeitung, 1900

4R3/7n/pK6/P2k4/4N3/8/2b3PB/1n3Q2

#2

7 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qd3#
    • 1...Bb3
      • 2.Qd3#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Ba4
      • 2.Qd3#
  • Tries
    • 1.Rd8+?
      • 1...Kxe4
        • 2.Qf3#
        • 2.Qf4#
      • 1...Ke6!
    • 1.Qb5+?
      • 1...Kd4
        • 2.Bg1#
      • 1...axb5!
  • Keys
    • 1.Be5!
      • 1...Kxe4
        • 2.Qf3#
      • 1...Bxe4
        • 2.Qf7#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sa3
        • 2.Sc3#
      • 1...Bd1
        • 2.Qd3#
      • 1...Bb3
        • 2.Qd3#
      • 1...Ba4
        • 2.Qd3#
      • 1...Sd2
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sg5
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sf8
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::QAR2(A)
    • B(b);N_GUARD::QAR2(A),XB(b)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::B(C)
      • Refutation
        • P(d);XQ(A)
  • Actual
    • B(C);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • B(b);SBLOCK,XS(D)::QAB(A)
      • B(b);N_GUARD::QAR2(A),XB(b)
      • S(a);N_GUARD::S(D)
      • B(b);N_GUARD::QAR2(A)
      • S(a);N_GUARD::S(D),XS(a)
      • S(e);N_GUARD::S(D)
      • S(e);N_GUARD::S(D),XS(e)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).